(PHP 5, PHP 7)
array_intersect_uassoc — Computes the intersection of arrays with additional index check, compares indexes by a callback function
$array1
, array $array2
[, array $...
], callable $key_compare_func
) : array
array_intersect_uassoc() returns an array
containing all the values of array1
that are present in all the arguments. Note that the keys are used in
the comparison unlike in array_intersect().
array1Initial array for comparison of the arrays.
array2First array to compare keys against.
...Variable list of array arguments to compare values against.
key_compare_funcThe comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second. Note that before PHP 7.0.0 this integer had to be in the range from -2147483648 to 2147483647.
Returns the values of array1 whose values exist
in all of the arguments.
Example #1 array_intersect_uassoc() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));
?>
The above example will output:
Array
(
[b] => brown
)